EEvery time at night or when it's dark, there's this tiny red light that apears on top of my iphone, near the speaker. It's quite scary. Is there something wrong..
This is the proximity sensor, no need to worry, depending on the light it can have a red glow.
Aliens sometimes use your camera to record what's going on, primarily at night, but most likely just your proximity sensor, as Ingo has stated.
Yes, it is a proximity sensor. If your iPhone is unlocked and you hold the phone up to your ear, you will find that Siri comes on - this is triggered by that proximity sensor.
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